Mission Seven: Castle part 6

As you bust through this new wave of enemies, you'll eventually be able to cross through the newly-opened door, and will come to a dark room, with you on a catwalk overlooking it. Your instincts might tell you to quickly dash down to the far end of the catwalk, where a doorway will allow you to proceed with the mission at hand. But actually, if you're interested in another treasure, you're going to want to do something else entirely. Below you is an office area that we traversed earlier. It's where we found a staggering three pieces of Intel. But this location has one more valuable to surrender to you if you know how to get it. Do you see the horizontal support beams running across the room? Jump onto the one that will lead to a small, isolated room on the far side of the area, with a hole in the ceiling. Crossing the beam, you can drop through the hole and find a sealed safe. Examine the safe by following the on-screen prompt, and once it opens, grab the Tome of Power that sits within (2/2).

With the Tome of Power in hand, you're going to have to do some backtracking to get to the location you were earlier in, atop the catwalk. Thankfully, enemies don't respawn, so the journey back to the dining room and up to the second floor should be a brief one. You'll be back atop that catwalk in no time, and can now journey leftward through the doorway there to continue. From here, the linear path you need to take is rather clear. When you reach a dead end, the wall on your right with the sun icon will prove to be your salvation. Use Veil to get through, and then traverse the passages on the other side as well. You'll eventually come to a room replete with more ammunition of all kind, a veritable goldmine of ammunition for virtually all of your weapons. You can also find the final Gold bag, worth $100, in one of the corners (16/16). When you're ready, bust through the next set of doors, up the stairs, and through another door, and a cutscene will ensue.

The boss battle that ensues after the cutscene is actually multi-faceted and two part, so stay with us for a minute, and you'll know precisely what to do. You'll begin the battle on a gun turret. There are three other gun turrets in your vicinity. Each "wave" of the battle will destroy the gun you're currently on and force you to the next one. The large beast will come at you each time in an identical fashion -- use the turret to shoot the fleshy areas underneath the beasts head. When he comes at you, keep firing, and the beast will fall to its side. Shoot the pink-colored egg sacks on the side of the beast, and then he'll temporarily disappear, sending waves of enemies at you (they'll be either airborne or ground-based -- simply shoot them to survive). When the beast returns, he'll destroy the gun, so quickly run to the next corner, mount the gun, and repeat this process until all four egg sacks are destroyed, which will end the first wave of the battle. Easy, right?

The second wave begins at a surprising moment, because you'll be teleported back to the entrance to the castle. Walk towards the entrance point, and this foe will show up once more, and this time, you'll need to use your conventional weapons -- preferably a full MP43 -- to bring it down once more. As was the case earlier, shooting its hide or skin won't do anything, so aim at the fleshy parts underneath the head, the head itself, and the neck. When it looks like you'll be cornered, the foe will teleport behind you and the chase will begin once more. The main idea here is to avoid being damaged while getting off shots when you can. Eventually, the foe will sustain enough damage that he will fall, at which point you should rush him, follow the on-screen prompt to plant some explosives on it, and watch the beast's final moments unfold before your very eyes.